Clients
- 1&1 Internet SE
- Australian Energy Regulator (AER)
- Belgium regulatory authority (BIPT)
- British regulatory authority (Ofcom)
- Danish regulatory authority (DBA)
- DVGW - German Technical and Scientific Association for Gas and Water
- E-Control Austria
- ECTA
- Energy Regulaotry Commission of Thailand
- European Commission (EU)
- European Parliament
- Federal Ministry for Economic Affairs and Energy (BMWi)
- Federation of German Consumer Organisations (vzbv)
- German Federal Network Agency (BNetzA)
- Greek Ministry of Infrastructure, Transport and Networks
- Greek regulatory authority (EETT)
- Hellas Online (HOL)
- Infocom Research, Japan
- Institut Luxembourgeois des Regulation (ILR)
- Irish regulatory authority (ComReg)
- Jordanian regulatory authority (TRC)
- Kabel Deutschland
- KDDI Research Institute, Japan
- Ministry of Environment, Climate Protection and the Energy Sector Baden-Württemberg
- Ministry of Rural Affairs and Consumer Protection Baden-Württemberg
- Norwegian regulatory authority (Nkom)
- Namibian regulatory authority (CRAN)
- Office of Technology Assessment at the German Bundestag (TAB)
- Platform Telecom Operators and Service Providers
- Romanian regulatory authority (ANCOM)
- South African regulatory authority (ICASA)
- Swiss Federal Office of Energy (BFE)
- Telenet
- Turkish regulatory authority (ICTA)
- Turkish competition authority (RK)
- WIND Hellas
